A052307 - cp's OEIS frontend

A052307 Triangle read by rows: T(n,k) = number of bracelets (reversible necklaces) with n beads, k of which are black and n - k are white.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	2
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	3
24	3
25	3
26	1
27	1
28	1
29	1
30	3
31	4
32	4
33	3
34	1
35	1
36	1
37	1
38	4
39	5
40	8
41	5
42	4
43	1
44	1
45	1
46	1
47	4
48	7
49	10
50	10
51	7
52	4
53	1
54	1
55	1
56	1
57	5
58	8
59	16
60	16
61	16
62	8
63	5
64	1
65	1
66	1
67	1
68	5
69	10
70	20
71	26
72	26
73	20
74	10
75	5
76	1
77	1
78	1
79	1
80	6
81	12
82	29
83	38
84	50
85	38
86	29
87	12
88	6
89	1
90	1
91	1
92	1
93	6
94	14
95	35
96	57
97	76
98	76
99	57
100	35
101	14
102	6
103	1
104	1

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 3, 3, 3, 1, 1, 1, 1, 3, 4, 4, 3, 1, 1, 1, 1, 4, 5, 8, 5, 4, 1, 1, 1, 1, 4, 7, 10, 10, 7, 4, 1, 1, 1, 1, 5, 8, 16, 16, 16, 8, 5, 1, 1, 1, 1, 5, 10, 20, 26, 26, 20, 10, 5, 1, 1, 1, 1, 6, 12, 29, 38, 50, 38, 29, 12, 6, 1, 1, 1, 1, 6, 14, 35, 57, 76, 76, 57, 35, 14, 6, 1, 1]

cp's OEIS Frontend

A052307 Triangle read by rows: T(n,k) = number of bracelets (reversible necklaces) with n beads, k of which are black and n - k are white.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	2
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	3
24	3
25	3
26	1
27	1
28	1
29	1
30	3
31	4
32	4
33	3
34	1
35	1
36	1
37	1
38	4
39	5
40	8
41	5
42	4
43	1
44	1
45	1
46	1
47	4
48	7
49	10
50	10
51	7
52	4
53	1
54	1
55	1
56	1
57	5
58	8
59	16
60	16
61	16
62	8
63	5
64	1
65	1
66	1
67	1
68	5
69	10
70	20
71	26
72	26
73	20
74	10
75	5
76	1
77	1
78	1
79	1
80	6
81	12
82	29
83	38
84	50
85	38
86	29
87	12
88	6
89	1
90	1
91	1
92	1
93	6
94	14
95	35
96	57
97	76
98	76
99	57
100	35
101	14
102	6
103	1
104	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	2
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	3
24	3
25	3
26	1
27	1
28	1
29	1
30	3
31	4
32	4
33	3
34	1
35	1
36	1
37	1
38	4
39	5
40	8
41	5
42	4
43	1
44	1
45	1
46	1
47	4
48	7
49	10
50	10
51	7
52	4
53	1
54	1
55	1
56	1
57	5
58	8
59	16
60	16
61	16
62	8
63	5
64	1
65	1
66	1
67	1
68	5
69	10
70	20
71	26
72	26
73	20
74	10
75	5
76	1
77	1
78	1
79	1
80	6
81	12
82	29
83	38
84	50
85	38
86	29
87	12
88	6
89	1
90	1
91	1
92	1
93	6
94	14
95	35
96	57
97	76
98	76
99	57
100	35
101	14
102	6
103	1
104	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	2
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	3
24	3
25	3
26	1
27	1
28	1
29	1
30	3
31	4
32	4
33	3
34	1
35	1
36	1
37	1
38	4
39	5
40	8
41	5
42	4
43	1
44	1
45	1
46	1
47	4
48	7
49	10
50	10
51	7
52	4
53	1
54	1
55	1
56	1
57	5
58	8
59	16
60	16
61	16
62	8
63	5
64	1
65	1
66	1
67	1
68	5
69	10
70	20
71	26
72	26
73	20
74	10
75	5
76	1
77	1
78	1
79	1
80	6
81	12
82	29
83	38
84	50
85	38
86	29
87	12
88	6
89	1
90	1
91	1
92	1
93	6
94	14
95	35
96	57
97	76
98	76
99	57
100	35
101	14
102	6
103	1
104	1